Question

True or false questions.

1. Se shows a high degree of metallic bonding.

2.Ions of the same charge repel one another.

3.The octet rule indicates the elements from compounds in ways that give each element eight electrons.

4.Zr has two valence electrons.

5.Metal electrons are primarily associated with specific atoms.

6.In the body-centered cubic structure one metal atom is in the very center of the structure.

7.All group 2 cations will have the same packing arrangements.

8.Ion crystals form rough jagged edges when they break.

9. the coordination number tells how many ions surround an ion of opposite charge.

10. melted CaBr will not conduct electricity.

11. Fe2O3 is the principal component of rust.

12. coordination numbers for the action and anion in a crystal are identical.

13. close packing provides room for the electrons to flow easily.

14. the electron dot diagram for Cs will have two dots in it.

Answer 1

1) false (metals have on the left side has high metallic bonding)

2) true( like charge repel and unlike charge attract each other)

3) true (octet itself means eight)

4) flase (Zr has 4 valence electrons)

5) false (associated with the electrons)

6) true ( BCC because one atom is at body center and rest on edges)

7) false (different for all elements like some has top hcp middle ccp and bottom bcc arrangements)

8) true (when a mineral breaks into pieces with archduke, rough, or jagged edges)

9) true (Coordination Number tells the number of ions of opposite charge surrounding each ion in a crystal)

10) false (melted CaBr will conduct electricity)

11) true ( rust is the hydrated form of  Iron(III) oxide or ferric oxide)

12) false (it will not identical)

13) false( close pack will not flow electrons easy )

14) false (Cs belongs to group-1 so it has one electron dot diagram)